Liquid-fuel furnace



Patented Nov. 29, 1887;

0. MQ-GEARING. LIQUID P UEL FURNACE.

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(No Model.)

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UNITED STATES PATENT OFFICE.

CHARLES M. GEARING, OF PITTSBURG, PENNSYLVANIA.

LIQUID=FUEL FURNACE.

SPECIFICATION forming part of Letters Patent No. 374,057, dated November 29, 1887.

Application filed February 14, 1887. Serial No. 227,490. (No model.)

erence being had therein to the accompanying drawings.

This invention relates to certain improvements in furnaces of that class in which fluid hydrocarbons are employed as fuel, and it has for its objects to provide for the thorough and effective combustion of the same and the convenient renewal of the parts exposed to the heat when the same are worn out or clogged, as more fully hereinafter specified; and my in vention consists in the improved elements herein shown, and specifically pointed out in the claim. V r

The above-mentioned objects I attain by the means illustrated in the accompanying drawings, in which--'- Figure 1 represents a longitudinal vertical sectional view of a furnace, showing my invention applied thereto; Fig. 2, a longitudinal horizontal sectional view of the same, and Fig. 3 a longitudinal vertical sectional view of a furnace showing a slight modification of my invention.

In the drawings, the letter A indicates the walls of the furnace, which are constructed of brick-work or other refractory material and of any convenient form.

B indicates a depressed hearth or pit, which may contain a mass of broken fire-brick or other absorbent refractory material, indicated by the letter O.

The front of the furnace is provided with three openings, D E D, as plainly shown in the respective figures of the drawings. Through the openings D D extend the pipes F, which are connected by means of elbowsG to apipe, H, extending transversely across the front of the furnace, as indicated in Fig. 2 of the drawings. Connected with the pipe His a pipe, I, which extends through the aperture E into the furnace. The said pipe is contracted at its inner end-that is, the end terminating in the furnace-and its outer end is provided with an air-inlet, K, and a steam-injector, L, by means of which a forced current of air and steam may be passed through the pipes I F F, the said pipes F F being perforated, as indicated by the letter L, to permit the air and steam to escape into the furnace from each side toward the center.

The letter M indicates a pipe leading from a tank, N, containing fluid hydrocarbon, and terminating just short of the contracted aperture and within the pipe I. The said pipe M is provided with a stop-cock, P, by which the flow of hydrocarbon fluid to the furnace may be regulated and controlled.

In the modification shown in Fig. 3 of the drawings a pipe, R, extends from the pipe I into the depressed or recessed hearth of the furnace, and the oil or fluid-hydrocarbon pipe M extends into the pipe B, so that the fluid hydrocarbon may be carried by the draft through the same into the furnace.

The operation of my invention will be readily understoodin connection with the above description, and is as follows: The parts being properly arranged and steam let in through the injector will create a draft through the pipes F, F, and I, injecting air and steam into the furnace through the pipes F F and a,.com bined jet of air, steam, and fluid-hydrocarbon through the pipes I and M. The combined oil, steam, and air, being ignited, will furnish an intense heat to the interior of the furnace, and,

thorough combustion will be effected by the jets of steam and air escaping from the perforations in the pipes F F.

As constructed, it will be perceived that the pipes F F I may be drawn out of the furnace and readily removed when burned or worn out.

Having thus described my invention, what I claim, and desire to secure by Letters Patent,

In a liquid-fuel-feeding furnace, the combination, with the pan and a Ushaped pipe, F, perforated for the purpose described, of the central injector-pipe, I, an oil-pipe therein leading from a head, and a steam-inj ector leading into a pipe communicating with the said pipe I and provided with an air-supply pipe, whereby oil, steam, and air are commingled and introduced in jets into the furnace in close relation to the bed of incandescent matter in said pan, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.-

O. M. GEARING.

Witnesses:

CHAS. D. DAVIS, W. D. ALEXANDER. 

